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e60d07b6 LB |
1 | /* |
2 | * arch/arm/mach-iop32x/n2100.c | |
3 | * | |
4 | * Board support code for the Thecus N2100 platform. | |
5 | * | |
6 | * Author: Rory Bolt <rorybolt@pacbell.net> | |
7 | * Copyright (C) 2002 Rory Bolt | |
8 | * Copyright 2003 (c) MontaVista, Software, Inc. | |
9 | * Copyright (C) 2004 Intel Corp. | |
10 | * | |
11 | * This program is free software; you can redistribute it and/or modify it | |
12 | * under the terms of the GNU General Public License as published by the | |
13 | * Free Software Foundation; either version 2 of the License, or (at your | |
14 | * option) any later version. | |
15 | */ | |
16 | ||
17 | #include <linux/mm.h> | |
18 | #include <linux/init.h> | |
9aa69338 | 19 | #include <linux/f75375s.h> |
e60d07b6 LB |
20 | #include <linux/delay.h> |
21 | #include <linux/kernel.h> | |
22 | #include <linux/pci.h> | |
23 | #include <linux/pm.h> | |
24 | #include <linux/string.h> | |
25 | #include <linux/slab.h> | |
26 | #include <linux/serial_core.h> | |
27 | #include <linux/serial_8250.h> | |
28 | #include <linux/mtd/physmap.h> | |
c00593f6 | 29 | #include <linux/i2c.h> |
e60d07b6 LB |
30 | #include <linux/platform_device.h> |
31 | #include <linux/reboot.h> | |
32 | #include <asm/hardware.h> | |
33 | #include <asm/io.h> | |
34 | #include <asm/irq.h> | |
35 | #include <asm/mach/arch.h> | |
36 | #include <asm/mach/map.h> | |
37 | #include <asm/mach/pci.h> | |
38 | #include <asm/mach/time.h> | |
39 | #include <asm/mach-types.h> | |
40 | #include <asm/page.h> | |
41 | #include <asm/pgtable.h> | |
3668b45d | 42 | #include <asm/arch/time.h> |
e60d07b6 LB |
43 | |
44 | /* | |
45 | * N2100 timer tick configuration. | |
46 | */ | |
47 | static void __init n2100_timer_init(void) | |
48 | { | |
49 | /* 33.000 MHz crystal. */ | |
3668b45d | 50 | iop_init_time(198000000); |
e60d07b6 LB |
51 | } |
52 | ||
53 | static struct sys_timer n2100_timer = { | |
54 | .init = n2100_timer_init, | |
3668b45d | 55 | .offset = iop_gettimeoffset, |
e60d07b6 LB |
56 | }; |
57 | ||
58 | ||
59 | /* | |
60 | * N2100 I/O. | |
61 | */ | |
62 | static struct map_desc n2100_io_desc[] __initdata = { | |
63 | { /* on-board devices */ | |
64 | .virtual = N2100_UART, | |
65 | .pfn = __phys_to_pfn(N2100_UART), | |
66 | .length = 0x00100000, | |
67 | .type = MT_DEVICE | |
68 | }, | |
69 | }; | |
70 | ||
71 | void __init n2100_map_io(void) | |
72 | { | |
73 | iop3xx_map_io(); | |
74 | iotable_init(n2100_io_desc, ARRAY_SIZE(n2100_io_desc)); | |
75 | } | |
76 | ||
77 | ||
78 | /* | |
79 | * N2100 PCI. | |
80 | */ | |
d73d8011 | 81 | static int __init |
e60d07b6 LB |
82 | n2100_pci_map_irq(struct pci_dev *dev, u8 slot, u8 pin) |
83 | { | |
84 | int irq; | |
85 | ||
86 | if (PCI_SLOT(dev->devfn) == 1) { | |
87 | /* RTL8110SB #1 */ | |
88 | irq = IRQ_IOP32X_XINT0; | |
89 | } else if (PCI_SLOT(dev->devfn) == 2) { | |
90 | /* RTL8110SB #2 */ | |
811c9a4b | 91 | irq = IRQ_IOP32X_XINT3; |
e60d07b6 LB |
92 | } else if (PCI_SLOT(dev->devfn) == 3) { |
93 | /* Sil3512 */ | |
94 | irq = IRQ_IOP32X_XINT2; | |
95 | } else if (PCI_SLOT(dev->devfn) == 4 && pin == 1) { | |
96 | /* VT6212 INTA */ | |
97 | irq = IRQ_IOP32X_XINT1; | |
98 | } else if (PCI_SLOT(dev->devfn) == 4 && pin == 2) { | |
99 | /* VT6212 INTB */ | |
100 | irq = IRQ_IOP32X_XINT0; | |
101 | } else if (PCI_SLOT(dev->devfn) == 4 && pin == 3) { | |
102 | /* VT6212 INTC */ | |
103 | irq = IRQ_IOP32X_XINT2; | |
104 | } else if (PCI_SLOT(dev->devfn) == 5) { | |
105 | /* Mini-PCI slot */ | |
106 | irq = IRQ_IOP32X_XINT3; | |
107 | } else { | |
108 | printk(KERN_ERR "n2100_pci_map_irq() called for unknown " | |
109 | "device PCI:%d:%d:%d\n", dev->bus->number, | |
110 | PCI_SLOT(dev->devfn), PCI_FUNC(dev->devfn)); | |
111 | irq = -1; | |
112 | } | |
113 | ||
114 | return irq; | |
115 | } | |
116 | ||
117 | static struct hw_pci n2100_pci __initdata = { | |
118 | .swizzle = pci_std_swizzle, | |
119 | .nr_controllers = 1, | |
120 | .setup = iop3xx_pci_setup, | |
121 | .preinit = iop3xx_pci_preinit, | |
122 | .scan = iop3xx_pci_scan_bus, | |
123 | .map_irq = n2100_pci_map_irq, | |
124 | }; | |
125 | ||
66822b2e LB |
126 | /* |
127 | * Both r8169 chips on the n2100 exhibit PCI parity problems. Set | |
128 | * the ->broken_parity_status flag for both ports so that the r8169 | |
129 | * driver knows it should ignore error interrupts. | |
130 | */ | |
131 | static void n2100_fixup_r8169(struct pci_dev *dev) | |
132 | { | |
133 | if (dev->bus->number == 0 && | |
134 | (dev->devfn == PCI_DEVFN(1, 0) || | |
135 | dev->devfn == PCI_DEVFN(2, 0))) | |
136 | dev->broken_parity_status = 1; | |
137 | } | |
138 | DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_REALTEK, PCI_ANY_ID, n2100_fixup_r8169); | |
139 | ||
e60d07b6 LB |
140 | static int __init n2100_pci_init(void) |
141 | { | |
142 | if (machine_is_n2100()) | |
143 | pci_common_init(&n2100_pci); | |
144 | ||
145 | return 0; | |
146 | } | |
147 | ||
148 | subsys_initcall(n2100_pci_init); | |
149 | ||
150 | ||
151 | /* | |
152 | * N2100 machine initialisation. | |
153 | */ | |
154 | static struct physmap_flash_data n2100_flash_data = { | |
155 | .width = 2, | |
156 | }; | |
157 | ||
158 | static struct resource n2100_flash_resource = { | |
159 | .start = 0xf0000000, | |
160 | .end = 0xf0ffffff, | |
161 | .flags = IORESOURCE_MEM, | |
162 | }; | |
163 | ||
164 | static struct platform_device n2100_flash_device = { | |
165 | .name = "physmap-flash", | |
166 | .id = 0, | |
167 | .dev = { | |
168 | .platform_data = &n2100_flash_data, | |
169 | }, | |
170 | .num_resources = 1, | |
171 | .resource = &n2100_flash_resource, | |
172 | }; | |
173 | ||
174 | ||
175 | static struct plat_serial8250_port n2100_serial_port[] = { | |
176 | { | |
177 | .mapbase = N2100_UART, | |
178 | .membase = (char *)N2100_UART, | |
179 | .irq = 0, | |
180 | .flags = UPF_SKIP_TEST, | |
181 | .iotype = UPIO_MEM, | |
182 | .regshift = 0, | |
183 | .uartclk = 1843200, | |
184 | }, | |
185 | { }, | |
186 | }; | |
187 | ||
188 | static struct resource n2100_uart_resource = { | |
189 | .start = N2100_UART, | |
190 | .end = N2100_UART + 7, | |
191 | .flags = IORESOURCE_MEM, | |
192 | }; | |
193 | ||
194 | static struct platform_device n2100_serial_device = { | |
195 | .name = "serial8250", | |
196 | .id = PLAT8250_DEV_PLATFORM, | |
197 | .dev = { | |
198 | .platform_data = n2100_serial_port, | |
199 | }, | |
200 | .num_resources = 1, | |
201 | .resource = &n2100_uart_resource, | |
202 | }; | |
203 | ||
9aa69338 RV |
204 | static struct f75375s_platform_data n2100_f75375s = { |
205 | .pwm = { 255, 255 }, | |
206 | .pwm_enable = { 0, 0 }, | |
207 | }; | |
208 | ||
c00593f6 MM |
209 | static struct i2c_board_info __initdata n2100_i2c_devices[] = { |
210 | { | |
211 | I2C_BOARD_INFO("rtc-rs5c372", 0x32), | |
212 | .type = "rs5c372b", | |
213 | }, | |
9aa69338 RV |
214 | { |
215 | I2C_BOARD_INFO("f75375", 0x2e), | |
216 | .type = "f75375", | |
217 | .platform_data = &n2100_f75375s, | |
218 | }, | |
c00593f6 | 219 | }; |
e60d07b6 LB |
220 | |
221 | /* | |
222 | * Pull PCA9532 GPIO #8 low to power off the machine. | |
223 | */ | |
224 | static void n2100_power_off(void) | |
225 | { | |
226 | local_irq_disable(); | |
227 | ||
228 | /* Start condition, I2C address of PCA9532, write transaction. */ | |
229 | *IOP3XX_IDBR0 = 0xc0; | |
230 | *IOP3XX_ICR0 = 0xe9; | |
231 | mdelay(1); | |
232 | ||
233 | /* Write address 0x08. */ | |
234 | *IOP3XX_IDBR0 = 0x08; | |
235 | *IOP3XX_ICR0 = 0xe8; | |
236 | mdelay(1); | |
237 | ||
238 | /* Write data 0x01, stop condition. */ | |
239 | *IOP3XX_IDBR0 = 0x01; | |
240 | *IOP3XX_ICR0 = 0xea; | |
241 | ||
242 | while (1) | |
243 | ; | |
244 | } | |
245 | ||
246 | ||
247 | static struct timer_list power_button_poll_timer; | |
248 | ||
249 | static void power_button_poll(unsigned long dummy) | |
250 | { | |
251 | if (gpio_line_get(N2100_POWER_BUTTON) == 0) { | |
252 | ctrl_alt_del(); | |
253 | return; | |
254 | } | |
255 | ||
256 | power_button_poll_timer.expires = jiffies + (HZ / 10); | |
257 | add_timer(&power_button_poll_timer); | |
258 | } | |
259 | ||
260 | ||
261 | static void __init n2100_init_machine(void) | |
262 | { | |
263 | platform_device_register(&iop3xx_i2c0_device); | |
264 | platform_device_register(&n2100_flash_device); | |
265 | platform_device_register(&n2100_serial_device); | |
2492c845 DW |
266 | platform_device_register(&iop3xx_dma_0_channel); |
267 | platform_device_register(&iop3xx_dma_1_channel); | |
e60d07b6 | 268 | |
c00593f6 MM |
269 | i2c_register_board_info(0, n2100_i2c_devices, |
270 | ARRAY_SIZE(n2100_i2c_devices)); | |
271 | ||
e60d07b6 LB |
272 | pm_power_off = n2100_power_off; |
273 | ||
274 | init_timer(&power_button_poll_timer); | |
275 | power_button_poll_timer.function = power_button_poll; | |
276 | power_button_poll_timer.expires = jiffies + (HZ / 10); | |
277 | add_timer(&power_button_poll_timer); | |
278 | } | |
279 | ||
280 | MACHINE_START(N2100, "Thecus N2100") | |
281 | /* Maintainer: Lennert Buytenhek <buytenh@wantstofly.org> */ | |
282 | .phys_io = N2100_UART, | |
283 | .io_pg_offst = ((N2100_UART) >> 18) & 0xfffc, | |
284 | .boot_params = 0xa0000100, | |
285 | .map_io = n2100_map_io, | |
286 | .init_irq = iop32x_init_irq, | |
287 | .timer = &n2100_timer, | |
288 | .init_machine = n2100_init_machine, | |
289 | MACHINE_END |